Available online 7 December 2023

The reverse impression technique consists of the extraoral digitalization of an implant-supported interim prosthesis by placing scan analogs in an interim implant-supported prosthesis. The technique facilitates the recording of implant and tooth positions and allows the digitalization of the volumetric dimensions of the interim restoration. However, it is not able to register soft tissue changes during the healing process. A modified reverse impression technique is described to facilitate capturing the current dimensions and soft tissue information at the time of the definitive implant scan. Additionally, the modified technique includes the use of a verification device. The extraoral digitalization of the verification device minimizes complications caused by the lack of passive fit of the milled interim polymethyl methacrylate prosthesis.

A patient receiving a mandibular complete arch implant-supported prosthesis was selected to describe the modified reverse impression technique. The patient had a screw-retained interim implant-supported prosthesis, with poor fit of the intaglio surface caused by soft tissue healing (Fig. 1). The patient had no functional or hygienic problems with the interim prosthesis during the healing time and osteointegration period. The following protocol was completed to capture all the information needed

The described technique facilitates the digitalization of the volumetric dimensions of the interim restoration, intraoral soft tissue information at the time of the definitive digital scan, antagonist arch, and maxillomandibular relationship. These digital files contain the information needed to design the definitive implant-supported prosthesis by using a complete digital workflow. Compared with the reverse impression method, the described modified technique provides 2 main advantages, the

The described technique facilitates the digitalization of the volumetric dimensions of the interim restoration, soft tissue information at the time of the definitive scan, antagonist arch, and maxillomandibular relationship. Additionally, the modified technique includes the use of a verification device. These digital files contain the information needed to design the definitive implant-supported prosthesis by using a complete digital workflow.

Copyright © 2023 by the Editorial Council of The Journal of Prosthetic Dentistry. All rights reserved.